Device for regulating pressure and quantity of fluids.



Patented A'ug 221899.

H. FRIEDRICH.

DEVICE FOR REGULATING PRESSURE AND QUANTITY OF FLUIDS.

(Application filed June 27, 18,99.)

(No Model.)

' MW Mm .tit-y regulator embodying my invention,

-nN m-Esmn eF nir'rWEmA, GERMANY,

crevice son $PECI3E'ICATION forming part of Letters'Patent N0.

631,741,.dated August 22, 1899.

Application filed June 2 7, 1899. Serial No. 722,041. (No model.)

1'0 all whom it may concern.-

Be it known that'l, Harts FRIEDRICH, a subject of the Emperor of Germany, residing at hiittweida, Germany, have invented certain new and useful Improvements in Devices for Regulating the Pressure and Quantity of Fluids; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to pressureregulating devices and the like; and its object is to provide a novel means or device for regulating the pressure and quantity of fluids and to render such device simple in construction and absolutely reliable in operation.

It consists in the novel construction, arrangement, and combination of the parts of a regulating device, as presently described, and particularly pointed out in the claim.

' In the accompanying drawings, which form a part of this specification, Figure 1 is a central vertical sect-ion of a pressure and quanthe inlet arranged to direct the flow upwardly against the regulating device. Fig. 2 is a similar view, but with the inlet arranged to direct the low upon the top of the regulating device. Fig. 3 is a transverse-section of the device.

The chief parts of the regulator are the braking-piston A, the internal ferrule or braking-tube l3, and the pressure-receiver or pressure-compensating device C; also, the casing D, with inlet and outlet.

The braking-piston A is in general a prismatic body of any desired cross-sectionthat is, solid or hollow, broken or closed, with smooth, grooved, or edged surfaces.

The braking-tube B surrounds thebrakingbody in such a manner that in each position of the braking-piston the fluid-passage,wl1ich may, as preferred, be single or multiple and of any shape, will remain constant.

The braking-piston and braking-tube form the regulating-body, of which one of the parts is stationary and the other movable, or both are movable against each other.

The necessary length L in which the braking-piston protrudes into the braking-tube iscalled the braking length.

r The pressure-receiver or pressure-equalizer 0 consists of any spring or weight which coinpensates the change in the length of braking and which is connected to the movable part of the regulating-bod y. It serves to take up the difference in pressure on the movable part of, the regulating-body and to equalize it as far as is necessary. I

The casing D contains the different parts and is provided with inlet and outlet.

In the inlet and outlet space there is a difference in pressure on account of thcinserted resistance,\vhereby a force is produced ,which effects the displacement of the movable part ofthe regulating-body. Ihis is transmitted to the pressurereceiver. If the piston were fixed, anincrcase in the difference of pressure would produce an increase in the quantity of fluid passing through, and vice versa.

The device, Fig. 1, acts in such a manner that according to the action of the pressurereceiver the length of braking increases with an additional difference inpressure, and vice versa. Thus the influence in the variation of pressure is equalized on the quantity of fluid in such a manner that the quantity of fluid passing, according to the position of the piston and the pressure-receiver, is more or less constant.

In the construction shown in Fig. 2 the braking length of the action of the pressurerecciver decreases in proportion to the additional increase in pressure, and vice versa. The quantity of fluid passing is therefore dependent on the change in the difference of the pressure in an increased degree, as in stationary pistons similar changes of the difference in pressure would only cause less changes in the quantity of the fluid passing through than with a yielding piston.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

In an interchangeable pressurc-regulating device for fluids, a valve-chamber D with two diagonally-opposite ports, a fast internal ferrule 13 of cone shape, midway of said ports, a cylindrical piston A longitudinally movable saccharine reassess Ann euAn-nrv or FLUlfiS.

ferrule-the 'sizeof which space is regulated in said ferrule, said piston adapted to receive the direct impact of a. passing fluid medium, and forming aspace between itself and the pression of said piston during'the-passage of a. fluid medium, substantially as flescribei- 1o In testimony whereof I afiix my signature in presence of two witnesses. bythe. position of the piston, and a. coiled p HANS FRIED-RICH. spring interposed between and fastened to i said piston andan end extremity of the valveehamber and serving to compensate the 'de- 4 Witnesses;

J. C. MONAGHA-N,

ANNA MA KIm 

